1.25” Steer tube expander plug

[dricked]

Does anyone know of an option for a light weight setup that will still offer support in a carbon steer tube? The one in my Giant Propel is pretty chunky.

[DJT21]

Here you go
https://www.ebay.co.uk/itm/J-L-Steer-Tu ... Swa8dZ2kNb

[dricked]

Excellent! Thank you.

[Squashednuts]

I prefer the JRC components superlight expander

https://www.jrc-components.com/products ... t-expander

It has more points of contact...but is about 6g heavier

There a few threads devoted to this very subject

Also quite a bit on YouTube

https://m.youtube.com/watch?v=l2PMfPiy90E

[ooo]

He needs 1.25, not 1.125 . Another option:

https://www.schmolke-carbon.com/product ... ead-plugs/

[DJT21]

Excellent! Thank you.

I have one on my Canyon. I would say it works very well, but it doesn't really have to do much does it!? Other than hold a bolt in the steerer tube. A bit fiddly to set up, but once fitted it's been fine.

[dricked]

My main concern was supporting the carbon steer tube where the stem clamps it but I assume if I place this where the stem is it should work. The oem giant pice is a boat anchor and quite long.

[addictR1]

I have the similar boat anchor in my BMC. After this post, I decided to leave it as is.

https://weightweenies.starbike.com/foru ... p?t=148781


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[dricked]

I read through that and watched the two videos. The first one the guy says that the expander plug in the giant overdrive setup is no good or not good enough for him? Not really much else in that thread other than opinions and light weight options.

I think if I just make sure that the expander plug is where the stem clamps the steer tube and I don’t hulk the stem bolts down it should be ok? Maybe keep the metal sleeve?

[Wattsofhair]

I have the extralite on my 2020 TCR. I don't think it's advertised as OD2 but the instructions it comes with says it can do 1-1/4 (27.2mm)

Unfortunately the ID on my fork was 27.4, it was able to expand enough to not move by hand but once I started tightening the cap, the expander was being pulled up. Smh

My soloution, I put a single layer of clear packing tape covering the first 2" of the inside of my fork. When measured now, it comes out to 27.3. Fits snug as a bug and I am able to torque the cap to spec.

After my packing tape shim install.

Not sure how safe this, it's cold af here in NY right now so I haven't ridden with it yet but it seems solid enough.

[GS100]

Giant do their own lighter glue in expander plug and cap. It came with my tcr frameset a few years back. Used the expander but didn't fancy the top cap with holes!

[Wattsofhair]

Giant do their own lighter glue in expander plug and cap. It came with my tcr frameset a few years back. Used the expander but didn't fancy the top cap with holes!

sounds interesting, do you have pics?

[GS100]

Giant do their own lighter glue in expander plug and cap. It came with my tcr frameset a few years back. Used the expander but didn't fancy the top cap with holes!

sounds interesting, do you have pics?

Can't photograph as it's installed, but this is the thing I was on about 'aircap' expander plug. Don't know exact weight I'm afraid

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[Aeo]

https://r2-bike.com/CARBON-TI-Expander- ... OS-1-1-4_1
https://r2-bike.com/CARBON-TI-Ahead-Cap ... e-OS-1-1-4


No glue needed

Saved 38 grams compared to stock Giant plug + top cap

Stock 60.6 grams, Carbon-Ti solution 22.5 grams

[Wattsofhair]

https://r2-bike.com/CARBON-TI-Expander- ... OS-1-1-4_1
https://r2-bike.com/CARBON-TI-Ahead-Cap ... e-OS-1-1-4




No glue needed

Saved 38 grams compared to stock Giant plug + top cap

Stock 60.6 grams, Carbon-Ti solution 22.5 grams

Yea, im going to remove the Extralite expander I just ordered that Carbon Ti combo. That 5.8g Extralite expander is so tempting but on my first ride with it i didn't like the feedback in the bars. I'm not going to risk it, I'll just have to eat that few g difference.



Front end feels a little less responsive but I'm gonna chalk it up to that tiny ultralite expander. I don't think it's able to apply enough expansion pressure and it almost feels like the fork tube it's flexing if that makes any sense.

15.1 current cap and screw
5.8 extralite expander
Total-20.9

Carbon ti expander 17g*
Carbon to cap/bolt 6g*
Total-23g*

So with the carbon Ti cap and screw it only puts me 2.1g over my current setup with the Extralite expander and factory cap and screw. Im always down to take risk but potentially snapping my fork over 2.1g isnt worth it to me.

Ill just put the Extralite expnder on my Klein